861. Rusting of Iron involves_____?
✅ A. Oxidation
Author: Aurangzeb – Page 44
862. Water has maximum density at_______?
✅ A. 4°C
863. Places where the temperature of air is below freezing point of the water, the precipitation will be in the form of _____ ?
✅ B. Snow
864. Deficiency diseases are caused due to the deficiency of______?
✅ A. Vitamins
865. The study of X-rays and their medical applications is called ____ ?
✅ B. Radiology
866. What is the molecular formula for Ammonia?
✅ C. NH3
867. Most drugs are excreted through________?
✅ B. Kidney
868. Which variety of glass is heat resistant?
✅ D. Pyrex glass
869. The carbon dioxide content in the air that we exhale is about?
✅ B. 4%
870. What are the primary colors of Light?
✅ D. Red, Green, Blue